diff -urpN --strip-trailing-cr ../flatcomments/flatcomments.module ./flatcomments.module
--- ../flatcomments/flatcomments.module	2009-03-13 07:49:19.000000000 +0100
+++ ./flatcomments.module	2009-05-16 16:38:08.000000000 +0200
@@ -20,8 +20,13 @@ function flatcomments_form_comment_form_
 }
 
 /**
- * Implementation of hook_form_FORM_ID_alter().
+ * Implementation of hook_form_alter().
  */
-function flatcomments_form_node_type_form_alter(&$form, &$form_state) {
-  $form['comment']['comment_default_mode']['#description'] .= t(' <strong>Flatcomments enabled:</strong> Flat list options will force replies to be to the main post.');
+function flatcomments_form_alter(&$form, $form_state, $form_id) {
+  // We can't use hook_form_FORM_ID_alter() here, because it's called prior
+  // to any hook_form_alter() implementations, so the 'comment' part is not
+  // added yet.
+  if ($form_id == 'node_type_form') {
+    $form['comment']['comment_default_mode']['#description'] .= t(' <strong>Flatcomments enabled:</strong> Flat list options will force replies to be to the main post.');
+  }
 }